—— 请按键盘 空白键 开始游戏 ——

"The line between hero and villain is often thinner than we think."
The concept of NP-completeness has provided a powerful tool for understanding the complexity of problems.
写作是一种思考的方式,一种理解世界的方式。
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.
一般人的毛病,就是容易受局部的蒙蔽,因而不能明白大道理。眼光不妨放长远一些,站得高一些,能看得更广,格局更大。